The fall of the absolute monarchy in Thailand does not mean the complete establishment of democracy in Thailand. Since the Siamese Revolution of 1932, democratization has not seemingly accomplished despite that fact that the constitution has been continuously revised and the current constitution is the eighteenth one. There are many possible reasons for this failure: the excessive influence of the Royal Thai Army, the political intervention of the former power, the economic and social gap between the elites and the lower-class, and the inability of parliamentary representatives. In addition, the more important fact is that the legal system and the functioning of the courts create these difficulties, in particular, concerning the electoral litigation. As one of reasons for the political failure, the election has also been questioned at the issue of its sincerity and people’s political rights and liberties. Does “the control of the political elections” really keep the electoral sincerity and sufficiently ensure political rights and liberties of the people? How the democratization of Thailand can be carried out under the contemporary legal system and this political context? What will the future of the Thai political system look like? The answers to these questions are in the study of the legal regime of political elections and of the functioning of the courts in electoral system.